Peel, wash and chop the potatoes. Clean, peel and wash the vegetables. Cut carrots into slices, kohlrabi into pieces. Peel and chop onions
Heat the oil in a pot. Brown the vegetables, onions and potatoes in it. Deglaze with 1 l water. Bring to the boil and stir in the stock. Cover and cook for about 12 minutes. Add the frozen peas about 5 minutes before the end and cook with them
Cut the cold cuts into strips and heat in the soup, season to taste. Wash the chervil, pluck it and sprinkle it on top